Among the various principles of child development, under the 'Principle of Directionality', what do the 'Cephalocaudal' and 'Proximodistal' trends indicate?

In child development, the 'Principle of Directionality' clarifies that physical and motor development proceeds in a definite and predictable direction. According to the 'Cephalocaudal' trend, development starts from the head and moves downward toward the feet (meaning the child learns to control the head first and the feet later), whereas according to the 'Proximodistal' trend, development starts from the center of the body and progresses toward the periphery or outer limbs (such as from the torso to the hands and fingers).